mirror of
https://github.com/crystalidea/qt6windows7.git
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145 lines
3.7 KiB
C++
145 lines
3.7 KiB
C++
// Copyright (C) 2016 The Qt Company Ltd.
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// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
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#include "window.h"
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#include <QComboBox>
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#include <QGridLayout>
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//! [0]
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Window::Window()
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{
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originalRenderArea = new RenderArea;
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shapeComboBox = new QComboBox;
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shapeComboBox->addItem(tr("Clock"));
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shapeComboBox->addItem(tr("House"));
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shapeComboBox->addItem(tr("Text"));
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shapeComboBox->addItem(tr("Truck"));
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QGridLayout *layout = new QGridLayout;
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layout->addWidget(originalRenderArea, 0, 0);
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layout->addWidget(shapeComboBox, 1, 0);
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//! [0]
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//! [1]
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for (int i = 0; i < NumTransformedAreas; ++i) {
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transformedRenderAreas[i] = new RenderArea;
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operationComboBoxes[i] = new QComboBox;
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operationComboBoxes[i]->addItem(tr("No transformation"));
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operationComboBoxes[i]->addItem(tr("Rotate by 60\xC2\xB0"));
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operationComboBoxes[i]->addItem(tr("Scale to 75%"));
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operationComboBoxes[i]->addItem(tr("Translate by (50, 50)"));
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connect(operationComboBoxes[i], &QComboBox::activated,
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this, &Window::operationChanged);
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layout->addWidget(transformedRenderAreas[i], 0, i + 1);
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layout->addWidget(operationComboBoxes[i], 1, i + 1);
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}
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//! [1]
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//! [2]
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setLayout(layout);
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setupShapes();
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shapeSelected(0);
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setWindowTitle(tr("Transformations"));
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}
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//! [2]
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//! [3]
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void Window::setupShapes()
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{
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QPainterPath truck;
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//! [3]
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truck.setFillRule(Qt::WindingFill);
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truck.moveTo(0.0, 87.0);
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truck.lineTo(0.0, 60.0);
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truck.lineTo(10.0, 60.0);
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truck.lineTo(35.0, 35.0);
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truck.lineTo(100.0, 35.0);
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truck.lineTo(100.0, 87.0);
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truck.lineTo(0.0, 87.0);
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truck.moveTo(17.0, 60.0);
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truck.lineTo(55.0, 60.0);
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truck.lineTo(55.0, 40.0);
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truck.lineTo(37.0, 40.0);
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truck.lineTo(17.0, 60.0);
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truck.addEllipse(17.0, 75.0, 25.0, 25.0);
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truck.addEllipse(63.0, 75.0, 25.0, 25.0);
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//! [4]
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QPainterPath clock;
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//! [4]
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clock.addEllipse(-50.0, -50.0, 100.0, 100.0);
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clock.addEllipse(-48.0, -48.0, 96.0, 96.0);
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clock.moveTo(0.0, 0.0);
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clock.lineTo(-2.0, -2.0);
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clock.lineTo(0.0, -42.0);
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clock.lineTo(2.0, -2.0);
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clock.lineTo(0.0, 0.0);
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clock.moveTo(0.0, 0.0);
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clock.lineTo(2.732, -0.732);
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clock.lineTo(24.495, 14.142);
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clock.lineTo(0.732, 2.732);
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clock.lineTo(0.0, 0.0);
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//! [5]
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QPainterPath house;
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//! [5]
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house.moveTo(-45.0, -20.0);
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house.lineTo(0.0, -45.0);
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house.lineTo(45.0, -20.0);
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house.lineTo(45.0, 45.0);
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house.lineTo(-45.0, 45.0);
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house.lineTo(-45.0, -20.0);
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house.addRect(15.0, 5.0, 20.0, 35.0);
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house.addRect(-35.0, -15.0, 25.0, 25.0);
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//! [6]
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QPainterPath text;
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//! [6]
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QFont font;
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font.setPixelSize(50);
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QRect fontBoundingRect = QFontMetrics(font).boundingRect(tr("Qt"));
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text.addText(-QPointF(fontBoundingRect.center()), font, tr("Qt"));
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//! [7]
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shapes.append(clock);
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shapes.append(house);
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shapes.append(text);
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shapes.append(truck);
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connect(shapeComboBox, &QComboBox::activated,
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this, &Window::shapeSelected);
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}
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//! [7]
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//! [8]
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void Window::operationChanged()
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{
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static const Operation operationTable[] = {
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NoTransformation, Rotate, Scale, Translate
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};
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QList<Operation> operations;
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for (int i = 0; i < NumTransformedAreas; ++i) {
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int index = operationComboBoxes[i]->currentIndex();
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operations.append(operationTable[index]);
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transformedRenderAreas[i]->setOperations(operations);
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}
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}
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//! [8]
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//! [9]
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void Window::shapeSelected(int index)
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{
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QPainterPath shape = shapes[index];
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originalRenderArea->setShape(shape);
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for (int i = 0; i < NumTransformedAreas; ++i)
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transformedRenderAreas[i]->setShape(shape);
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}
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//! [9]
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